Collar-adjusting clamp.



G. F. NEVVON.

COLLAR ADJUSTING CLAMP.

APPLICATION FILED Nov. 4. I9I2. t

1,275,461. PaIenIedAu-O;13,1918.

se onerosi.

GEORGEVF. NEWTON, OF KANSS CITY, KANSAS. A.'SSIGITOEhl BY 'MESNEASSIGNMENTS, T UNIVERSAL-"EGEM CLAN? COMPANY, 0E CHECAGO, ILLINOIS, ACQRPZd/ATION 0F XLEINOIS.

corinnnausrme cnam?.

.To al' whom it' may conce/m.'

Be it known that l, Gannon F. Nnwron, a

i vcitizen of the United States, residingI at 'point until the collarcan be fastened at such point. i

`With this general object in View and others as hereinafter appear, theinvention consists incertain novel and peculiar features of constructionand organization as hereinafter describedand claimed;y and in order thatit may be fully understood reference is to be had to the accompanyingdrawin? in whichigure 1, is a vertical section showing the method ofadjusting and securing collars on hangers for the purpose of holding`falseworlr in position.

Fig. 2, is a View showing7 a part of a concrete column and false-workand also shows in elevation, the use of the adjusting collar clam).

n the said drawing, 1 is a bolt having a central bore or passage 2, anda clamping screw 3.

4 is a nut screwed upon the threaded stem of the bolt and provided withan angular external surface whereby it may be readily turned with awrench.v

The boit l and nut 4 constitute a tightening device adapted forlongitudinal expension and contraction and for longitudinai adjustmenton the rod and for longitudinaliy adjusting the collar on said rod, ashereinafter appears.

In Fig. 1, 6 indicates a falseovork upon which a concrete -door 7 islaid. 8 is a reinforce beam for the 'floor and 9 a concrete ribdepending from the door and iuclosing that portion of the beam belowthefioor. line.

10 is the bottom portion oi the false-work underlying rib 9 and 11 isone of a series of ribs extendingr transversely of the bottom 10. 12 isa hanger suspended from the beam 8, and extending downward through thebottorn 10 and cleat 11.

, 13 are collars secured on trie arms of the Specication of LettersPatent,

redenering. is, asie.

Application led November e, 1912. Serial No. 729,543.

hanger and forming supports for the overiying portion of the:false-work, the collars being secured rigidly to the rods by screws le.

Preferably the collars 13 are` iirst itted on the arms of the hanger andthe set screws 14 are turned so as to bear with sufficient force' on thearms to support the weight of the overiying portion oi the false workbefore the concrete floor is laid. The clamping device is then slippedupon one ot' the arms of the hanger until the nut L1 engagestheunderside of the collar on such erin and then the clamping screw 3 isturned to secure the bolt 1 rigidly on the arni. of the overlying collaris then loosened and a wrench is employed to screw the nut i upwardlyand thus;l slide the overlying collar upward until the false ,work hasattained the desired position, it being noted that .by the meansdescribed suiiicient force can be brought to bear on the cleat 11 toflatten outA the bottoni 10 in the eyent that the same is slightlytwisted by warpage or otherwise. After the bottom 10 is raised to thepoint desired, the set screw 14% is turned to secure the collar 13reliably in place. Set screw 3 is then loosened to permit the clann ligdevice to be slipped on the other arm of Vdie hanger and-then the saineadjusting operation. of the collar on said arm is eected, after whichthe clamping devices are removed from the rod.,

1When the time to remove the falsework arrives, the collars 13 areremoved and the false-work taken down -and "then the arms of the hangerare cut off at the bottom of the rib Si as usual.

ln Fig. 2,15 indicates a concrete column, 16 the false-work or forni, 17vertical ribs strengthening the forms, 18 cross bars engading the outersides of the ribs and 19 rods extending through the column. falso work.and bars 18 and also through the ribs 17, if desired.v

To hold the forms or 'ialsework in proper position, collars 13' aremounted on opposite ends of rod 19 and bear against the cross Set screwle Lemme@ clamp in the same mennen that eoiles 13 of Fig. l wereadjusted.

From the above description it will be apparent that I have produced acollar adjusting clamp which will perform 'its function efficiently andwhich embodies the desirable features of simplicity, strength7durability and cheapness of constructiom Claim:

l. ln a mold clamping device, a tie-rod, two clamping collars mounted ensaid rod, euch collar having means foi being secured tightly to saidrod, one of the collars being longitudinally adjustable on said rod, ande tightening device adapted for longitudinal expansion and contractionand for longitudinal adjustment on and having means foi' beingreleaszibly locked to' saidrod, and adapted to engage and longitudinallymove and to be, detached from said adjustable clamping collar. A

2. in :i clamping device, u tie rod, a clamping collar longitudinallyadjustable on said rod yand having means for being ieleusahly lockedthereto, und :i tightening device adapted for longitudinal expansion andcontraction, und .longitudinally adjustable on seid rod independently ofsaid clamping collar and adapted for longitudinally moving seid collar,and provided with means for being releasably locked to said rod.

v ln testimony whereof I afix my signature, in the presence of twowitnesses. Y

F RANK Il. GLOBE, G. Y., THORPE,

